SU961840A1 - Tool assembly to apparatus for direct extrusion of parts - Google Patents

Description

The invention relates to the processing of ¹ metal by pressure, and in particular to the field of pressing glasses.

Known tool node to g a device for direct extrusion of parts, mainly of the type of thin-walled cups, containing a container mounted in it with an annular gap fixed lower punch, and | q also connected with a movable plate upper punch equipped with a nozzle with a screw working section [1].

The disadvantages of the known tool are the low utilization of metal in the manufacture of '5 thin-walled glasses, as well as the low quality of the products obtained.

The purpose of the invention is to increase the utilization rate of the metal and '__ improve the quality of the finished products.

This goal is achieved by the fact that the tool assembly to the device for direct extrusion of parts, mainly of the type thin-wall cups, containing a container, a fixed lower punch installed in it with an annular gap, and such an upper punch connected to a movable plate equipped with a nozzle 30 with a screw the working area is equipped with a sleeve with a flange that is mounted with the possibility of axial movement and rotation, covering the nozzle, connected by pins with a ring placed on the upper punch, while between tsem sleeve and the upper plate is placed a thrust bearing.

The drawing shows the tool node, a General view.

The tool assembly contains a sleeve 1 with a flange, worn on the nozzle 2 of the upper punch 3. Ring 4 with a gap is worn on the upper punch 3 and is kept from falling by the protrusion of the upper punch 3 (the diameter of the punch 3 is slightly larger than the hole of the ring 4). Pins 5 and 6 are freely inserted into the holes of the ring 4 and the sleeve 1 with a flange, for example a wire with a diameter of 2-3 mm, the ends of which, after assembly, are unbent, glued or nuts are screwed on them. The thrust bearing 7 (or cage with balls) is placed between the plate 8 and the sleeve 1 with a flange. Plate 8 is mounted on columns (not shown) and is stationary relative to the press body. The lower punch 9 is pressed into the container body 10.

The tool assembly to the device for direct extrusion operates as follows.

After the lower end of the cup 11 by the movement of the upper press punch 3 reaches the level of the upper plane 5 of the container 10 of the press, the balls of the thrust bearing 7 (or cage) touch the plane of the plate 8 and, acting on the upper end of the sleeve

I with a flange, prevents its further movement up. Since the upper Punch 3 continues to move upward along with the nozzle 2, the threaded end of the nozzle 2 will go into the hole of the sleeve 1 from the flange 15 and, reaching the lower end of the sleeve 1, will release the cup 11. After that, the sleeve 1 can move down, however, it will be held by pins 5 and 6. The length of the pins must be such that the sleeve 1 ″ hangs ’in its lowest position while centering the bore of the sleeve 1 with the nozzle 2. Since the glass

II during the removal from the nozzle 2 with a J5 thread will tend to rotate by a certain angle, then due to the friction forces between the outer surface of the bottom of the cup 11 and the lower end of the sleeve 1, the latter will also rotate by a certain angle. So that there is no forced relative rotation of the sleeve 1 and the cup 11, which can lead to a distortion of its shape in the bottom area, their joint rotation is ensured by an insignificant moment arising from the rolling friction force at the contact point of the bearing balls 7 with the sleeve 1. The action of the pins 5 and 6 ring 4 easily rotates at some angle. Fixed fixing 40 of the ring 4 is unacceptable, since when removing the subsequent glasses 11, the rotation of the sleeve 1 will be in one direction. For pressing and further removal of the subsequent cup, a blank in the form of 45 washers is placed on the end of the lower punch 9, after which the upper punch 3 is lowered down and the cup 11 is pressed onto the workpiece by the nozzle 2 and the lower end of the sleeve 1. Then, the lower end of the cup is moved upward by the upper punch 3. reaches the level of the upper plane of the container 10 of the press and the removal process described above is repeated.

The proposed tool assembly allows during the removal of the glass not to distort its shape, but rather to calibrate the wall and `` fix '' the resulting shape of the glass, which increases the utilization of metal and improves the quality of the products compared to the known one.

Claims (1)

The invention relates to the processing of metals by pressure, in particular to the region of the pressing of glasses. A known tool assembly for a device for direct extrusion of parts, mainly of the type of thin-walled glasses, containing a container, a fixed lower punch mounted there with an annular gap, also an upper punch connected to the movable plate and provided with a nozzle with a screw working section 1. Disadvantages of the known tool are the low coefficient of use of the metal in the manufacture of thin-walled glasses, as well as the low quality of the products obtained. The purpose of the invention is to increase the utilization rate of the metal and improve the quality of the products obtained. The goal is achieved by the fact that the tool assembly to the device for direct extrusion of parts, mainly of the type of thin-walled glasses, contains a container mounted in it with an annular gap a fixed lower punch, and also an upper punch connected to the movable plate equipped with a nozzle with a screw working area It is equipped with an axially mounted and rotatable sleeve with a flange sleeve, connected by pins with a ring placed on the upper bore, and between the flange the sleeve and the upper plate is placed a thrust bearing. The drawing shows the instrumental node, a general view. The tool assembly contains a flange sleeve 1, which is worn on the nozzle 2 of the upper punch 3. The ring 4 is fitted with a gap on the upper punch 3 and is kept from falling by a projection of the upper poison 3 (the diameter of the punch 3 is somewhat larger than the opening of the ring 4). Pins 5 and b are freely inserted into the holes of the ring 4 and the sleeves 1 with a flange, for example a wire with a diameter of 2-3 mm, the ends of which, after being assembled, are folded back, either they are pasted on or nuts are screwed onto them. A thrust bearing 7 (or separator with balls) is placed between the plate 8 and the sleeve 1 with the flag. The plate 8 is mounted on columns (not shown) and fixed relative to the body of the press. The lower punch 9 is pressed into the body of the container 10. The tool assembly to the device for direct extrusion works as follows. After the lower end of the cup 11, by moving the upper punch 3 of the press reaches the level of the upper plane of the press container 10, the thrust bearing balls 7 (or separator) touch the plane of the plate 8 and, acting on the upper end of the sleeve I with the flange, prevents it from moving further upwards. Since the upper Panson 3 continues to move upwards with the nozzle 2, the threaded end of the nozzle 2 will go into the opening of the sleeve 1 with the barrel and, after reaching the lower end of the sleeve 1, will release the cup 11. After that the sleeve 1 can move down, however, it will be held by pins 5 and 6. The length of the pins must be such that sleeve 1 hangs in the lowest position while centering the opening of sleeve 1 by nozzle 2, since the cup II is removed from nozzle 2 with thread I. if c1 strains are rotated from a certain angle, then due to the frictional forces between the outer surface of the bottom of the glass 11 and the lower end of the sleeve 1, the latter will also turn through a certain angle. So that there is no forced relative rotation of sleeve 1 and cup 11, which can lead to a distortion of its shape in the bottom area, their joint rotation is provided by a slight moment arising due to the force of rolling friction at the point of contact of the bearing balls 7 with 1. pins 5 and 6, ring 4 will easily turn to a certain angle. Fixed fastening of the ring 4 is unacceptable, since when removing the subsequent glasses 11, the sleeve 1 will turn in one direction. For pressing and subsequent removal of the subsequent glass, the blank is placed on the end face of the lower punch 9, after which the upper punch 3 is lowered and the bottom end of the glass is pressed by pressing the upper nozzle 2 and the lower end of the sleeve 1. The level of the upper plane of the press container 10 and the removal process described above are repeated. The proposed tool assembly allows, in the process of removing the glass, not to distort its shape, but, on the contrary, to calibrate the wall and fix the resulting shape of the glass, which increases the utilization rate of the metal and improves the quality of the products obtained as compared to the known. Claims Instrument assembly for a device for direct extrusion of parts, mainly of thin-walled glasses type, containing a container, a fixed lower punch installed in it with an annular gap, and also an upper punch connected to a movable plate, provided with a nozzle with a screw working section, about and so that, in order to increase the utilization rate of the metal and improve the quality of the products obtained, it is equipped with axially displaceable and rotatable asadku hub flange associated with pins placed at the upper punch sealing rings {1, wherein the sleeve between the flange and the upper plate is placed a thrust bearing. Sources of information taken into account during the examination 1. USSR author's certificate in accordance with application 2795619 / 25-27, cl. B 21 K 21/04, 10.07.79 (prototype).